Fluid pressure actuated recorder

Details Fluid pressure actuated recorder Fluid pressure actuated recorder

1976-09-13

1977-08-02

Hartary, Joseph W.

Recorders

Float responsive or expansible chamber responsive marker

346113, 346125, 346138, G01D 902

Patent

active

040400646

ABSTRACT:
A signal actuated recorder device has a recording drum connected to be actuated only when sensing a signal. The recorder is connected to measure the torque employed to make up joints of tubular goods into a string, for example, and can also be used in other applications, such as the testing of joints of pipe.
In making up a string of production tubing, a hydraulic strain gauge assembly is connected to the tubing tongs to measure the magnitude of torque imparted into the tubular goods. The pressure signal from the piston of the gauge actuates a motor of the recorder which advances the drum one increment. At the same time, the pressure signal is utilized to move a scribe in proportion to the magnitude of the signal.

REFERENCES:
patent: 3198003 (1965-08-01), Wiseman
patent: 3521292 (1970-07-01), Boucher

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